GuestCtrlPrivate.cpp@ 102654

Last change on this file since 102654 was 99393, checked in by vboxsync, 20 months ago
Guest Control: Completely revamped / overhauled the (now legacy) stream output parsing code and added lots of documentation to it. This way it should be a lot clearer what it's supposed to be doing. Also, this now should fix some nasty bugs in that area we had in the past especially with some Linux guests (i.e. OL6), which sometimes send output data in a very unsteady manner. Also overhauled the testcases while at it [build fix].
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 72.5 KB

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1	/* $Id: GuestCtrlPrivate.cpp 99393 2023-04-13 17:09:53Z vboxsync $ */
2	/** @file
3	* Internal helpers/structures for guest control functionality.
4	*/
5
6	/*
7	* Copyright (C) 2011-2023 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_GUEST_CONTROL
33	#include "LoggingNew.h"
34
35	#ifndef VBOX_WITH_GUEST_CONTROL
36	# error "VBOX_WITH_GUEST_CONTROL must defined in this file"
37	#endif
38	#include "GuestCtrlImplPrivate.h"
39	#include "GuestSessionImpl.h"
40	#include "VMMDev.h"
41
42	#include <iprt/asm.h>
43	#include <iprt/cpp/utils.h> /* For unconst(). */
44	#include <iprt/ctype.h>
45	#ifdef DEBUG
46	# include <iprt/file.h>
47	#endif
48	#include <iprt/fs.h>
49	#include <iprt/path.h>
50	#include <iprt/rand.h>
51	#include <iprt/time.h>
52	#include <VBox/AssertGuest.h>
53
54
55	/**
56	* Returns a stringyfied error of a guest fs error.
57	*
58	* @returns Stringyfied error.
59	* @param guestErrorInfo Guest error info to get stringyfied error for.
60	*/
61	/* static */
62	Utf8Str GuestFs::guestErrorToString(const GuestErrorInfo &guestErrorInfo)
63	{
64	Utf8Str strErr;
65
66	/** @todo pData->u32Flags: int vs. uint32 -- IPRT errors are negative !!! */
67	switch (guestErrorInfo.getVrc())
68	{
69	case VERR_ACCESS_DENIED:
70	strErr.printf(tr("Access to \"%s\" denied"), guestErrorInfo.getWhat().c_str());
71	break;
72
73	case VERR_FILE_NOT_FOUND: /* This is the most likely error. */
74	RT_FALL_THROUGH();
75	case VERR_PATH_NOT_FOUND:
76	strErr.printf(tr("No such file or directory \"%s\""), guestErrorInfo.getWhat().c_str());
77	break;
78
79	case VERR_INVALID_PARAMETER:
80	strErr.printf(tr("Invalid parameter specified"));
81	break;
82
83	case VERR_INVALID_VM_HANDLE:
84	strErr.printf(tr("VMM device is not available (is the VM running?)"));
85	break;
86
87	case VERR_HGCM_SERVICE_NOT_FOUND:
88	strErr.printf(tr("The guest execution service is not available"));
89	break;
90
91	case VERR_BAD_EXE_FORMAT:
92	strErr.printf(tr("The file \"%s\" is not an executable format"), guestErrorInfo.getWhat().c_str());
93	break;
94
95	case VERR_AUTHENTICATION_FAILURE:
96	strErr.printf(tr("The user \"%s\" was not able to logon"), guestErrorInfo.getWhat().c_str());
97	break;
98
99	case VERR_INVALID_NAME:
100	strErr.printf(tr("The file \"%s\" is an invalid name"), guestErrorInfo.getWhat().c_str());
101	break;
102
103	case VERR_TIMEOUT:
104	strErr.printf(tr("The guest did not respond within time"));
105	break;
106
107	case VERR_CANCELLED:
108	strErr.printf(tr("The execution operation was canceled"));
109	break;
110
111	case VERR_GSTCTL_MAX_CID_OBJECTS_REACHED:
112	strErr.printf(tr("Maximum number of concurrent guest processes has been reached"));
113	break;
114
115	case VERR_NOT_FOUND:
116	strErr.printf(tr("The guest execution service is not ready (yet)"));
117	break;
118
119	case VERR_NOT_SUPPORTED:
120	strErr.printf(tr("Specified mode or flag is not supported on the guest"));
121	break;
122
123	default:
124	strErr.printf(tr("Unhandled error %Rrc for \"%s\" occurred on guest -- please file a bug report"),
125	guestErrorInfo.getVrc(), guestErrorInfo.getWhat().c_str());
126	break;
127	}
128
129	return strErr;
130	}
131
132	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS
133	/**
134	* Sets the file system object data from a given GSTCTLDIRENTRYEX struct.
135	*
136	* @returns VBox status code.
137	* @param pDirEntryEx Pointer to GSTCTLDIRENTRYEX struct to use.
138	* @param strUser Resolved user name owning the object on the guest.
139	* @param strGroups Resolved user group(s) the object on the guest is associated with.
140	* On Windows there can be multiple groups assigned. The groups are separated with ";"
141	* The first group found is always the primary group.
142	*/
143	int GuestFsObjData::FromGuestDirEntryEx(PCGSTCTLDIRENTRYEX pDirEntryEx, const Utf8Str &strUser /* = "" /, const Utf8Str &strGroups / = "" */)
144	{
145	mName = pDirEntryEx->szName;
146
147	return FromGuestFsObjInfo(&pDirEntryEx->Info, strUser, strGroups);
148	}
149
150	/**
151	* Sets the file system object data from a given GSTCTLFSOBJINFO struct.
152	*
153	* @returns VBox status code.
154	* @param pFsObjInfo Pointer to GSTCTLFSOBJINFO struct to use.
155	* @param strUser Resolved user name owning the object on the guest.
156	* @param strGroups Resolved user group(s) the object on the guest is associated with.
157	* On Windows there can be multiple groups assigned. The groups are separated with ";"
158	* The first group found is always the primary group.
159	*/
160	int GuestFsObjData::FromGuestFsObjInfo(PCGSTCTLFSOBJINFO pFsObjInfo,
161	const Utf8Str &strUser /* = "" /, const Utf8Str &strGroups / = "" */)
162	{
163	int vrc = VINF_SUCCESS;
164
165	mType = GuestBase::fileModeToFsObjType(pFsObjInfo->Attr.fMode);
166
167	mFileAttrs = "";
168	switch (mType)
169	{
170	case FsObjType_File: mFileAttrs += '-'; break;
171	case FsObjType_Directory: mFileAttrs += 'd'; break;
172	case FsObjType_Symlink: mFileAttrs += 'l'; break;
173	case FsObjType_DevChar: mFileAttrs += 'c'; break;
174	case FsObjType_DevBlock: mFileAttrs += 'b'; break;
175	case FsObjType_Fifo: mFileAttrs += 'f'; break;
176	case FsObjType_Socket: mFileAttrs += 's'; break;
177	case FsObjType_WhiteOut: mFileAttrs += 'w'; break;
178	default:
179	mFileAttrs += '?';
180	AssertFailedStmt(vrc = VERR_NOT_SUPPORTED);
181	break;
182	}
183
184	#define ADD_ATTR(a_Flag, a_Set, a_Clear) \
185	mFileAttrs += pFsObjInfo->Attr.fMode & a_Flag ? a_Set : a_Clear
186
187	ADD_ATTR(RTFS_UNIX_IRUSR, 'r', '-');
188	ADD_ATTR(RTFS_UNIX_IWUSR, 'w', '-');
189	ADD_ATTR(RTFS_UNIX_IXUSR, 'x', '-');
190
191	ADD_ATTR(RTFS_UNIX_IRGRP, 'r', '-');
192	ADD_ATTR(RTFS_UNIX_IWGRP, 'w', '-');
193	ADD_ATTR(RTFS_UNIX_IXGRP, 'x', '-');
194
195	ADD_ATTR(RTFS_UNIX_IROTH, 'r', '-');
196	ADD_ATTR(RTFS_UNIX_IWOTH, 'w', '-');
197	ADD_ATTR(RTFS_UNIX_IXOTH, 'x', '-');
198
199	/** @todo Implement sticky bits. */
200	mFileAttrs += " "; /* Reserve 3 chars for sticky bits. */
201
202	mFileAttrs += " "; /* Separator. */
203
204	ADD_ATTR(RTFS_DOS_READONLY , 'R', '-');
205	ADD_ATTR(RTFS_DOS_HIDDEN , 'H', '-');
206	ADD_ATTR(RTFS_DOS_SYSTEM , 'S', '-');
207	ADD_ATTR(RTFS_DOS_DIRECTORY , 'D', '-');
208	ADD_ATTR(RTFS_DOS_ARCHIVED , 'A', '-');
209	ADD_ATTR(RTFS_DOS_NT_DEVICE , 'd', '-');
210	ADD_ATTR(RTFS_DOS_NT_NORMAL , 'N', '-');
211	ADD_ATTR(RTFS_DOS_NT_TEMPORARY , 'T', '-');
212	ADD_ATTR(RTFS_DOS_NT_SPARSE_FILE , 'P', '-');
213	ADD_ATTR(RTFS_DOS_NT_REPARSE_POINT , 'J', '-');
214	ADD_ATTR(RTFS_DOS_NT_COMPRESSED , 'C', '-');
215	ADD_ATTR(RTFS_DOS_NT_OFFLINE , 'O', '-');
216	ADD_ATTR(RTFS_DOS_NT_NOT_CONTENT_INDEXED, 'I', '-');
217	ADD_ATTR(RTFS_DOS_NT_ENCRYPTED , 'E', '-');
218
219	#undef ADD_ATTR
220
221	mObjectSize = pFsObjInfo->cbObject;
222	mAllocatedSize = pFsObjInfo->cbAllocated;
223	mAccessTime = pFsObjInfo->AccessTime.i64NanosecondsRelativeToUnixEpoch;
224	mBirthTime = pFsObjInfo->BirthTime.i64NanosecondsRelativeToUnixEpoch;
225	mChangeTime = pFsObjInfo->ChangeTime.i64NanosecondsRelativeToUnixEpoch;
226	mModificationTime = pFsObjInfo->ModificationTime.i64NanosecondsRelativeToUnixEpoch;
227	mUserName = strUser;
228	mUID = pFsObjInfo->Attr.u.Unix.uid;
229	mGID = pFsObjInfo->Attr.u.Unix.gid;
230	mGroupName = strGroups; /** @todo Separate multiple group. */
231	mNumHardLinks = pFsObjInfo->Attr.u.Unix.cHardlinks;
232	mNodeIDDevice = pFsObjInfo->Attr.u.Unix.INodeIdDevice;
233	mNodeID = pFsObjInfo->Attr.u.Unix.INodeId;
234	mDeviceNumber = RTFS_IS_DEV_BLOCK(pFsObjInfo->Attr.fMode)
235	\|\| RTFS_IS_DEV_CHAR (pFsObjInfo->Attr.fMode) ? pFsObjInfo->Attr.u.Unix.Device : 0;
236	mGenerationID = pFsObjInfo->Attr.u.Unix.GenerationId;
237	mUserFlags = 0;
238
239	mACL = ""; /** @todo Implement ACL handling. */
240
241	return vrc;
242	}
243	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_AS_CMDS */
244
245	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
246	/**
247	* Extracts the timespec from a given stream block key.
248	*
249	* @return Pointer to handed-in timespec, or NULL if invalid / not found.
250	* @param strmBlk Stream block to extract timespec from.
251	* @param strKey Key to get timespec for.
252	* @param pTimeSpec Where to store the extracted timespec.
253	*/
254	/* static */
255	PRTTIMESPEC GuestFsObjData::TimeSpecFromKey(const GuestToolboxStreamBlock &strmBlk, const Utf8Str &strKey, PRTTIMESPEC pTimeSpec)
256	{
257	AssertPtrReturn(pTimeSpec, NULL);
258
259	Utf8Str strTime = strmBlk.GetString(strKey.c_str());
260	if (strTime.isEmpty())
261	return NULL;
262
263	if (!RTTimeSpecFromString(pTimeSpec, strTime.c_str()))
264	return NULL;
265
266	return pTimeSpec;
267	}
268
269	/**
270	* Extracts the nanoseconds relative from Unix epoch for a given stream block key.
271	*
272	* @return Nanoseconds relative from Unix epoch, or 0 if invalid / not found.
273	* @param strmBlk Stream block to extract nanoseconds from.
274	* @param strKey Key to get nanoseconds for.
275	*/
276	/* static */
277	int64_t GuestFsObjData::UnixEpochNsFromKey(const GuestToolboxStreamBlock &strmBlk, const Utf8Str &strKey)
278	{
279	RTTIMESPEC TimeSpec;
280	if (!GuestFsObjData::TimeSpecFromKey(strmBlk, strKey, &TimeSpec))
281	return 0;
282
283	return TimeSpec.i64NanosecondsRelativeToUnixEpoch;
284	}
285
286	/**
287	* Initializes this object data with a stream block from VBOXSERVICE_TOOL_LS.
288	*
289	* This is also used by FromStat since the output should be identical given that
290	* they use the same output function on the guest side when fLong is true.
291	*
292	* @return VBox status code.
293	* @param strmBlk Stream block to use for initialization.
294	* @param fLong Whether the stream block contains long (detailed) information or not.
295	*/
296	int GuestFsObjData::FromToolboxLs(const GuestToolboxStreamBlock &strmBlk, bool fLong)
297	{
298	LogFlowFunc(("\n"));
299	#ifdef DEBUG
300	strmBlk.DumpToLog();
301	#endif
302
303	/* Object name. */
304	mName = strmBlk.GetString("name");
305	ASSERT_GUEST_RETURN(mName.isNotEmpty(), VERR_NOT_FOUND);
306
307	/* Type & attributes. */
308	bool fHaveAttribs = false;
309	char szAttribs[32];
310	memset(szAttribs, '?', sizeof(szAttribs) - 1);
311	mType = FsObjType_Unknown;
312	const char *psz = strmBlk.GetString("ftype");
313	if (psz)
314	{
315	fHaveAttribs = true;
316	szAttribs[0] = *psz;
317	switch (*psz)
318	{
319	case '-': mType = FsObjType_File; break;
320	case 'd': mType = FsObjType_Directory; break;
321	case 'l': mType = FsObjType_Symlink; break;
322	case 'c': mType = FsObjType_DevChar; break;
323	case 'b': mType = FsObjType_DevBlock; break;
324	case 'f': mType = FsObjType_Fifo; break;
325	case 's': mType = FsObjType_Socket; break;
326	case 'w': mType = FsObjType_WhiteOut; break;
327	default:
328	AssertMsgFailed(("%s\n", psz));
329	szAttribs[0] = '?';
330	fHaveAttribs = false;
331	break;
332	}
333	}
334	psz = strmBlk.GetString("owner_mask");
335	if ( psz
336	&& (psz[0] == '-' \|\| psz[0] == 'r')
337	&& (psz[1] == '-' \|\| psz[1] == 'w')
338	&& (psz[2] == '-' \|\| psz[2] == 'x'))
339	{
340	szAttribs[1] = psz[0];
341	szAttribs[2] = psz[1];
342	szAttribs[3] = psz[2];
343	fHaveAttribs = true;
344	}
345	psz = strmBlk.GetString("group_mask");
346	if ( psz
347	&& (psz[0] == '-' \|\| psz[0] == 'r')
348	&& (psz[1] == '-' \|\| psz[1] == 'w')
349	&& (psz[2] == '-' \|\| psz[2] == 'x'))
350	{
351	szAttribs[4] = psz[0];
352	szAttribs[5] = psz[1];
353	szAttribs[6] = psz[2];
354	fHaveAttribs = true;
355	}
356	psz = strmBlk.GetString("other_mask");
357	if ( psz
358	&& (psz[0] == '-' \|\| psz[0] == 'r')
359	&& (psz[1] == '-' \|\| psz[1] == 'w')
360	&& (psz[2] == '-' \|\| psz[2] == 'x'))
361	{
362	szAttribs[7] = psz[0];
363	szAttribs[8] = psz[1];
364	szAttribs[9] = psz[2];
365	fHaveAttribs = true;
366	}
367	szAttribs[10] = ' '; /* Reserve three chars for sticky bits. */
368	szAttribs[11] = ' ';
369	szAttribs[12] = ' ';
370	szAttribs[13] = ' '; /* Separator. */
371	psz = strmBlk.GetString("dos_mask");
372	if ( psz
373	&& (psz[ 0] == '-' \|\| psz[ 0] == 'R')
374	&& (psz[ 1] == '-' \|\| psz[ 1] == 'H')
375	&& (psz[ 2] == '-' \|\| psz[ 2] == 'S')
376	&& (psz[ 3] == '-' \|\| psz[ 3] == 'D')
377	&& (psz[ 4] == '-' \|\| psz[ 4] == 'A')
378	&& (psz[ 5] == '-' \|\| psz[ 5] == 'd')
379	&& (psz[ 6] == '-' \|\| psz[ 6] == 'N')
380	&& (psz[ 7] == '-' \|\| psz[ 7] == 'T')
381	&& (psz[ 8] == '-' \|\| psz[ 8] == 'P')
382	&& (psz[ 9] == '-' \|\| psz[ 9] == 'J')
383	&& (psz[10] == '-' \|\| psz[10] == 'C')
384	&& (psz[11] == '-' \|\| psz[11] == 'O')
385	&& (psz[12] == '-' \|\| psz[12] == 'I')
386	&& (psz[13] == '-' \|\| psz[13] == 'E'))
387	{
388	memcpy(&szAttribs[14], psz, 14);
389	fHaveAttribs = true;
390	}
391	szAttribs[28] = '\0';
392	if (fHaveAttribs)
393	mFileAttrs = szAttribs;
394
395	/* Object size. */
396	int vrc = strmBlk.GetInt64Ex("st_size", &mObjectSize);
397	ASSERT_GUEST_RC_RETURN(vrc, vrc);
398	strmBlk.GetInt64Ex("alloc", &mAllocatedSize);
399
400	/* INode number and device. */
401	psz = strmBlk.GetString("node_id");
402	if (!psz)
403	psz = strmBlk.GetString("cnode_id"); /* copy & past error fixed in 6.0 RC1 */
404	if (psz)
405	mNodeID = RTStrToInt64(psz);
406	mNodeIDDevice = strmBlk.GetUInt32("inode_dev"); /* (Produced by GAs prior to 6.0 RC1.) */
407
408	if (fLong)
409	{
410	/* Dates. */
411	mAccessTime = GuestFsObjData::UnixEpochNsFromKey(strmBlk, "st_atime");
412	mBirthTime = GuestFsObjData::UnixEpochNsFromKey(strmBlk, "st_birthtime");
413	mChangeTime = GuestFsObjData::UnixEpochNsFromKey(strmBlk, "st_ctime");
414	mModificationTime = GuestFsObjData::UnixEpochNsFromKey(strmBlk, "st_mtime");
415
416	/* Owner & group. */
417	mUID = strmBlk.GetInt32("uid");
418	psz = strmBlk.GetString("username");
419	if (psz)
420	mUserName = psz;
421	mGID = strmBlk.GetInt32("gid");
422	psz = strmBlk.GetString("groupname");
423	if (psz)
424	mGroupName = psz;
425
426	/* Misc attributes: */
427	mNumHardLinks = strmBlk.GetUInt32("hlinks", 1);
428	mDeviceNumber = strmBlk.GetUInt32("st_rdev");
429	mGenerationID = strmBlk.GetUInt32("st_gen");
430	mUserFlags = strmBlk.GetUInt32("st_flags");
431
432	/** @todo ACL */
433	}
434
435	LogFlowFuncLeave();
436	return VINF_SUCCESS;
437	}
438
439	/**
440	* Parses stream block output data which came from the 'rm' (vbox_rm)
441	* VBoxService toolbox command. The result will be stored in this object.
442	*
443	* @returns VBox status code.
444	* @param strmBlk Stream block output data to parse.
445	*/
446	int GuestFsObjData::FromToolboxRm(const GuestToolboxStreamBlock &strmBlk)
447	{
448	#ifdef DEBUG
449	strmBlk.DumpToLog();
450	#endif
451	/* Object name. */
452	mName = strmBlk.GetString("fname"); /* Note: RTPathRmCmd() only sets this on failure. */
453
454	/* Return the stream block's vrc. */
455	return strmBlk.GetVrc(true /* fSucceedIfNotFound */);
456	}
457
458	/**
459	* Parses stream block output data which came from the 'stat' (vbox_stat)
460	* VBoxService toolbox command. The result will be stored in this object.
461	*
462	* @returns VBox status code.
463	* @param strmBlk Stream block output data to parse.
464	*/
465	int GuestFsObjData::FromToolboxStat(const GuestToolboxStreamBlock &strmBlk)
466	{
467	/* Should be identical output. */
468	return GuestFsObjData::FromToolboxLs(strmBlk, true /fLong/);
469	}
470
471	/**
472	* Parses stream block output data which came from the 'mktemp' (vbox_mktemp)
473	* VBoxService toolbox command. The result will be stored in this object.
474	*
475	* @returns VBox status code.
476	* @param strmBlk Stream block output data to parse.
477	*/
478	int GuestFsObjData::FromToolboxMkTemp(const GuestToolboxStreamBlock &strmBlk)
479	{
480	LogFlowFunc(("\n"));
481
482	#ifdef DEBUG
483	strmBlk.DumpToLog();
484	#endif
485	/* Object name. */
486	mName = strmBlk.GetString("name");
487	ASSERT_GUEST_RETURN(mName.isNotEmpty(), VERR_NOT_FOUND);
488
489	/* Assign the stream block's vrc. */
490	int const vrc = strmBlk.GetVrc();
491	LogFlowFuncLeaveRC(vrc);
492	return vrc;
493	}
494
495	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
496
497	/**
498	* Returns the IPRT-compatible file mode.
499	* Note: Only handling RTFS_TYPE_ flags are implemented for now.
500	*
501	* @return IPRT file mode.
502	*/
503	RTFMODE GuestFsObjData::GetFileMode(void) const
504	{
505	RTFMODE fMode = 0;
506
507	switch (mType)
508	{
509	case FsObjType_Directory:
510	fMode \|= RTFS_TYPE_DIRECTORY;
511	break;
512
513	case FsObjType_File:
514	fMode \|= RTFS_TYPE_FILE;
515	break;
516
517	case FsObjType_Symlink:
518	fMode \|= RTFS_TYPE_SYMLINK;
519	break;
520
521	default:
522	break;
523	}
524
525	/** @todo Implement more stuff. */
526
527	return fMode;
528	}
529
530	///////////////////////////////////////////////////////////////////////////////
531
532	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
533	/** @todo NOT thread safe yet! */
534	/** @todo Add exception handling for STL stuff! */
535
536	GuestToolboxStreamBlock::GuestToolboxStreamBlock(void)
537	: m_fComplete(false) { }
538
539	GuestToolboxStreamBlock::~GuestToolboxStreamBlock()
540	{
541	Clear();
542	}
543
544	/**
545	* Clears (destroys) the currently stored stream pairs.
546	*/
547	void GuestToolboxStreamBlock::Clear(void)
548	{
549	m_fComplete = false;
550	m_mapPairs.clear();
551	}
552
553	#ifdef DEBUG
554	/**
555	* Dumps the currently stored stream pairs to the (debug) log.
556	*/
557	void GuestToolboxStreamBlock::DumpToLog(void) const
558	{
559	LogFlowFunc(("Dumping contents of stream block=0x%p (%ld items, fComplete=%RTbool):\n",
560	this, m_mapPairs.size(), m_fComplete));
561
562	for (GuestCtrlStreamPairMapIterConst it = m_mapPairs.begin();
563	it != m_mapPairs.end(); ++it)
564	{
565	LogFlowFunc(("\t%s=%s\n", it->first.c_str(), it->second.mValue.c_str()));
566	}
567	}
568	#endif
569
570	/**
571	* Returns a 64-bit signed integer of a specified key.
572	*
573	* @return VBox status code. VERR_NOT_FOUND if key was not found.
574	* @param pszKey Name of key to get the value for.
575	* @param piVal Pointer to value to return.
576	*/
577	int GuestToolboxStreamBlock::GetInt64Ex(const char pszKey, int64_t piVal) const
578	{
579	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
580	AssertPtrReturn(piVal, VERR_INVALID_POINTER);
581	const char *pszValue = GetString(pszKey);
582	if (pszValue)
583	{
584	*piVal = RTStrToInt64(pszValue);
585	return VINF_SUCCESS;
586	}
587	return VERR_NOT_FOUND;
588	}
589
590	/**
591	* Returns a 64-bit integer of a specified key.
592	*
593	* @return int64_t Value to return, 0 if not found / on failure.
594	* @param pszKey Name of key to get the value for.
595	*/
596	int64_t GuestToolboxStreamBlock::GetInt64(const char *pszKey) const
597	{
598	int64_t iVal;
599	if (RT_SUCCESS(GetInt64Ex(pszKey, &iVal)))
600	return iVal;
601	return 0;
602	}
603
604	/**
605	* Returns the current number of stream pairs.
606	*
607	* @return uint32_t Current number of stream pairs.
608	*/
609	size_t GuestToolboxStreamBlock::GetCount(void) const
610	{
611	return m_mapPairs.size();
612	}
613
614	/**
615	* Gets the return code (name = "rc") of this stream block.
616	*
617	* @return VBox status code.
618	* @retval VERR_NOT_FOUND if the return code string ("rc") was not found.
619	* @param fSucceedIfNotFound When set to @c true, this reports back VINF_SUCCESS when the key ("rc") is not found.
620	* This can happen with some (older) IPRT-provided tools such as RTPathRmCmd(), which only outputs
621	* rc on failure but not on success. Defaults to @c false.
622	*/
623	int GuestToolboxStreamBlock::GetVrc(bool fSucceedIfNotFound /* = false */) const
624	{
625	const char *pszValue = GetString("rc");
626	if (pszValue)
627	return RTStrToInt16(pszValue);
628	if (fSucceedIfNotFound)
629	return VINF_SUCCESS;
630	/** @todo We probably should have a dedicated error for that, VERR_GSTCTL_GUEST_TOOLBOX_whatever. */
631	return VERR_NOT_FOUND;
632	}
633
634	/**
635	* Returns a string value of a specified key.
636	*
637	* @return uint32_t Pointer to string to return, NULL if not found / on failure.
638	* @param pszKey Name of key to get the value for.
639	*/
640	const char GuestToolboxStreamBlock::GetString(const char pszKey) const
641	{
642	AssertPtrReturn(pszKey, NULL);
643
644	try
645	{
646	GuestCtrlStreamPairMapIterConst itPairs = m_mapPairs.find(pszKey);
647	if (itPairs != m_mapPairs.end())
648	return itPairs->second.mValue.c_str();
649	}
650	catch (const std::exception &ex)
651	{
652	RT_NOREF(ex);
653	}
654	return NULL;
655	}
656
657	/**
658	* Returns a 32-bit unsigned integer of a specified key.
659	*
660	* @return VBox status code. VERR_NOT_FOUND if key was not found.
661	* @param pszKey Name of key to get the value for.
662	* @param puVal Pointer to value to return.
663	*/
664	int GuestToolboxStreamBlock::GetUInt32Ex(const char pszKey, uint32_t puVal) const
665	{
666	const char *pszValue = GetString(pszKey);
667	if (pszValue)
668	{
669	*puVal = RTStrToUInt32(pszValue);
670	return VINF_SUCCESS;
671	}
672	return VERR_NOT_FOUND;
673	}
674
675	/**
676	* Returns a 32-bit signed integer of a specified key.
677	*
678	* @returns 32-bit signed value
679	* @param pszKey Name of key to get the value for.
680	* @param iDefault The default to return on error if not found.
681	*/
682	int32_t GuestToolboxStreamBlock::GetInt32(const char *pszKey, int32_t iDefault) const
683	{
684	const char *pszValue = GetString(pszKey);
685	if (pszValue)
686	{
687	int32_t iRet;
688	int vrc = RTStrToInt32Full(pszValue, 0, &iRet);
689	if (RT_SUCCESS(vrc))
690	return iRet;
691	ASSERT_GUEST_MSG_FAILED(("%s=%s\n", pszKey, pszValue));
692	}
693	return iDefault;
694	}
695
696	/**
697	* Returns a 32-bit unsigned integer of a specified key.
698	*
699	* @return uint32_t Value to return, 0 if not found / on failure.
700	* @param pszKey Name of key to get the value for.
701	* @param uDefault The default value to return.
702	*/
703	uint32_t GuestToolboxStreamBlock::GetUInt32(const char pszKey, uint32_t uDefault /= 0*/) const
704	{
705	uint32_t uVal;
706	if (RT_SUCCESS(GetUInt32Ex(pszKey, &uVal)))
707	return uVal;
708	return uDefault;
709	}
710
711	/**
712	* Sets a value to a key or deletes a key by setting a NULL value. Extended version.
713	*
714	* @return VBox status code.
715	* @param pszKey Key name to process.
716	* @param cwcKey Maximum characters of \a pszKey to process.
717	* @param pszValue Value to set. Set NULL for deleting the key.
718	* @param cwcValue Maximum characters of \a pszValue to process.
719	* @param fOverwrite Whether a key can be overwritten with a new value if it already exists. Will assert otherwise.
720	*/
721	int GuestToolboxStreamBlock::SetValueEx(const char pszKey, size_t cwcKey, const char pszValue, size_t cwcValue,
722	bool fOverwrite /* = false */)
723	{
724	AssertPtrReturn(pszKey, VERR_INVALID_POINTER);
725	AssertReturn(cwcKey, VERR_INVALID_PARAMETER);
726
727	int vrc = VINF_SUCCESS;
728	try
729	{
730	Utf8Str const strKey(pszKey, cwcKey);
731
732	/* Take a shortcut and prevent crashes on some funny versions
733	* of STL if map is empty initially. */
734	if (!m_mapPairs.empty())
735	{
736	GuestCtrlStreamPairMapIter it = m_mapPairs.find(strKey);
737	if (it != m_mapPairs.end())
738	{
739	if (pszValue == NULL)
740	m_mapPairs.erase(it);
741	else if (!fOverwrite)
742	AssertMsgFailedReturn(("Key '%*s' already exists! Value is '%s'\n", cwcKey, pszKey, m_mapPairs[strKey].mValue.c_str()),
743	VERR_ALREADY_EXISTS);
744	}
745	}
746
747	if (pszValue)
748	{
749	GuestToolboxStreamValue val(pszValue, cwcValue);
750	Log3Func(("strKey='%s', strValue='%s'\n", strKey.c_str(), val.mValue.c_str()));
751	m_mapPairs[strKey] = val;
752	}
753	}
754	catch (const std::exception &)
755	{
756	/** @todo set vrc? */
757	}
758	return vrc;
759	}
760
761	/**
762	* Sets a value to a key or deletes a key by setting a NULL value.
763	*
764	* @return VBox status code.
765	* @param pszKey Key name to process.
766	* @param pszValue Value to set. Set NULL for deleting the key.
767	*/
768	int GuestToolboxStreamBlock::SetValue(const char pszKey, const char pszValue)
769	{
770	return SetValueEx(pszKey, RTSTR_MAX, pszValue, RTSTR_MAX);
771	}
772
773	///////////////////////////////////////////////////////////////////////////////
774
775	GuestToolboxStream::GuestToolboxStream(void)
776	: m_cbMax(_32M)
777	, m_cbAllocated(0)
778	, m_cbUsed(0)
779	, m_offBuf(0)
780	, m_pbBuffer(NULL)
781	, m_cBlocks(0) { }
782
783	GuestToolboxStream::~GuestToolboxStream(void)
784	{
785	Destroy();
786	}
787
788	/**
789	* Adds data to the internal parser buffer. Useful if there
790	* are multiple rounds of adding data needed.
791	*
792	* @return VBox status code. Will return VERR_TOO_MUCH_DATA if the buffer's maximum (limit) has been reached.
793	* @param pbData Pointer to data to add.
794	* @param cbData Size (in bytes) of data to add.
795	*/
796	int GuestToolboxStream::AddData(const BYTE *pbData, size_t cbData)
797	{
798	AssertPtrReturn(pbData, VERR_INVALID_POINTER);
799	AssertReturn(cbData, VERR_INVALID_PARAMETER);
800
801	int vrc = VINF_SUCCESS;
802
803	/* Rewind the buffer if it's empty. */
804	size_t cbInBuf = m_cbUsed - m_offBuf;
805	bool const fAddToSet = cbInBuf == 0;
806	if (fAddToSet)
807	m_cbUsed = m_offBuf = 0;
808
809	/* Try and see if we can simply append the data. */
810	if (cbData + m_cbUsed <= m_cbAllocated)
811	{
812	memcpy(&m_pbBuffer[m_cbUsed], pbData, cbData);
813	m_cbUsed += cbData;
814	}
815	else
816	{
817	/* Move any buffered data to the front. */
818	cbInBuf = m_cbUsed - m_offBuf;
819	if (cbInBuf == 0)
820	m_cbUsed = m_offBuf = 0;
821	else if (m_offBuf) /* Do we have something to move? */
822	{
823	memmove(m_pbBuffer, &m_pbBuffer[m_offBuf], cbInBuf);
824	m_cbUsed = cbInBuf;
825	m_offBuf = 0;
826	}
827
828	/* Do we need to grow the buffer? */
829	if (cbData + m_cbUsed > m_cbAllocated)
830	{
831	size_t cbAlloc = m_cbUsed + cbData;
832	if (cbAlloc <= m_cbMax)
833	{
834	cbAlloc = RT_ALIGN_Z(cbAlloc, _64K);
835	void *pvNew = RTMemRealloc(m_pbBuffer, cbAlloc);
836	if (pvNew)
837	{
838	m_pbBuffer = (uint8_t *)pvNew;
839	m_cbAllocated = cbAlloc;
840	}
841	else
842	vrc = VERR_NO_MEMORY;
843	}
844	else
845	vrc = VERR_TOO_MUCH_DATA;
846	}
847
848	/* Finally, copy the data. */
849	if (RT_SUCCESS(vrc))
850	{
851	if (cbData + m_cbUsed <= m_cbAllocated)
852	{
853	memcpy(&m_pbBuffer[m_cbUsed], pbData, cbData);
854	m_cbUsed += cbData;
855	}
856	else
857	vrc = VERR_BUFFER_OVERFLOW;
858	}
859	}
860
861	return vrc;
862	}
863
864	/**
865	* Destroys the internal data buffer.
866	*/
867	void GuestToolboxStream::Destroy(void)
868	{
869	if (m_pbBuffer)
870	{
871	RTMemFree(m_pbBuffer);
872	m_pbBuffer = NULL;
873	}
874
875	m_cbAllocated = 0;
876	m_cbUsed = 0;
877	m_offBuf = 0;
878	m_cBlocks = 0;
879	}
880
881	#ifdef DEBUG
882	/**
883	* Dumps the raw guest process output to a file on the host.
884	* If the file on the host already exists, it will be overwritten.
885	*
886	* @param pszFile Absolute path to host file to dump the output to.
887	*/
888	void GuestToolboxStream::Dump(const char *pszFile)
889	{
890	LogFlowFunc(("Dumping contents of stream=0x%p (cbAlloc=%u, cbSize=%u, cbOff=%u) to %s\n",
891	m_pbBuffer, m_cbAllocated, m_cbUsed, m_offBuf, pszFile));
892
893	RTFILE hFile;
894	int vrc = RTFileOpen(&hFile, pszFile, RTFILE_O_CREATE_REPLACE \| RTFILE_O_WRITE \| RTFILE_O_DENY_WRITE);
895	if (RT_SUCCESS(vrc))
896	{
897	vrc = RTFileWrite(hFile, m_pbBuffer, m_cbUsed, NULL /* pcbWritten */);
898	RTFileClose(hFile);
899	}
900	}
901	#endif /* DEBUG */
902
903	/**
904	* Tries to parse the next upcoming pair block within the internal buffer.
905	*
906	* Parsing behavior:
907	* - A stream can contain one or multiple blocks and is terminated by four (4) "\0".
908	* - A block (or "object") contains one or multiple key=value pairs and is terminated with two (2) "\0".
909	* - Each key=value pair is terminated by a single (1) "\0".
910	*
911	* As new data can arrive at a later time eventually completing a pair / block / stream,
912	* the algorithm needs to be careful not intepreting its current data too early. So only skip termination
913	* sequences if we really know that the termination sequence is complete. See comments down below.
914	*
915	* No locking done.
916	*
917	* @return VBox status code.
918	* @retval VINF_EOF if the stream reached its end.
919	* @param streamBlock Reference to guest stream block to fill
920	*/
921	int GuestToolboxStream::ParseBlock(GuestToolboxStreamBlock &streamBlock)
922	{
923	AssertMsgReturn(streamBlock.m_fComplete == false, ("Block object already marked as being completed\n"), VERR_WRONG_ORDER);
924
925	if ( !m_pbBuffer
926	\|\| !m_cbUsed)
927	return VINF_EOF;
928
929	AssertReturn(m_offBuf <= m_cbUsed, VERR_INVALID_PARAMETER);
930	if (m_offBuf == m_cbUsed)
931	return VINF_EOF;
932
933	char * const pszStart = (char *)&m_pbBuffer[m_offBuf];
934
935	size_t cbLeftParsed = m_offBuf < m_cbUsed ? m_cbUsed - m_offBuf : 0;
936	size_t cbLeftLookAhead = cbLeftParsed;
937
938	char pszLookAhead = pszStart; / Look ahead pointer to count terminators. */
939	char pszParsed = pszStart; / Points to data considered as being parsed already. */
940
941	Log4Func(("Current @ %zu/%zu:\n%.*Rhxd\n", m_offBuf, m_cbUsed, RT_MIN(cbLeftParsed, _1K), pszStart));
942
943	size_t cTerm = 0;
944
945	/*
946	* We have to be careful when handling single terminators ('\0') here, as we might not know yet
947	* if it's part of a multi-terminator seqeuence.
948	*
949	* So handle and skip those only when we hit a non-terminator char again.
950	*/
951	int vrc = VINF_SUCCESS;
952	while (cbLeftLookAhead)
953	{
954	/* Count consequtive terminators. */
955	if (*pszLookAhead == GUESTTOOLBOX_STRM_TERM)
956	{
957	cTerm++;
958	pszLookAhead++;
959	cbLeftLookAhead--;
960	continue;
961	}
962
963	pszParsed = pszLookAhead;
964	cbLeftParsed = cbLeftLookAhead;
965
966	/* We hit a non-terminator (again); now interpret where we are, and
967	* bail out if we need to. */
968	if (cTerm >= 2)
969	{
970	Log2Func(("Hit end of termination sequence (%zu)\n", cTerm));
971	break;
972	}
973
974	cTerm = 0; /* Reset consequtive counter. */
975
976	char * const pszPairEnd = RTStrEnd(pszParsed, cbLeftParsed);
977	if (!pszPairEnd) /* No zero terminator found (yet), try next time. */
978	break;
979
980	Log3Func(("Pair '%s' (%u)\n", pszParsed, strlen(pszParsed)));
981
982	Assert(pszPairEnd != pszParsed);
983	size_t const cbPair = (size_t)(pszPairEnd - pszParsed);
984	Assert(cbPair);
985	const char pszSep = (const char )memchr(pszParsed, '=', cbPair);
986	if (!pszSep) /* No separator found (yet), try next time. */
987	break;
988
989	/* Skip the separator so that pszSep points to the actual value. */
990	pszSep++;
991
992	char const * const pszKey = pszParsed;
993	char const * const pszVal = pszSep;
994
995	vrc = streamBlock.SetValueEx(pszKey, pszSep - pszKey - 1, pszVal, pszPairEnd - pszVal);
996	if (RT_FAILURE(vrc))
997	return vrc;
998
999	if (cbPair >= cbLeftParsed)
1000	break;
1001
1002	/* Accounting for next iteration. */
1003	pszParsed = pszPairEnd;
1004	Assert(cbLeftParsed >= cbPair);
1005	cbLeftParsed -= cbPair;
1006
1007	pszLookAhead = pszPairEnd;
1008	cbLeftLookAhead = cbLeftParsed;
1009
1010	if (cbLeftParsed)
1011	Log4Func(("Next iteration @ %zu:\n%.*Rhxd\n", pszParsed - pszStart, cbLeftParsed, pszParsed));
1012	}
1013
1014	if (cbLeftParsed)
1015	Log4Func(("Done @ %zu:\n%.*Rhxd\n", pszParsed - pszStart, cbLeftParsed, pszParsed));
1016
1017	m_offBuf += pszParsed - pszStart; /* Only account really parsed content. */
1018	Assert(m_offBuf <= m_cbUsed);
1019
1020	/* Did we hit a block or stream termination sequence? */
1021	if (cTerm >= GUESTTOOLBOX_STRM_BLK_TERM_CNT)
1022	{
1023	if (!streamBlock.IsEmpty()) /* Only account and complete blocks which have values in it. */
1024	{
1025	m_cBlocks++;
1026	streamBlock.m_fComplete = true;
1027	#ifdef DEBUG
1028	streamBlock.DumpToLog();
1029	#endif
1030	}
1031
1032	if (cTerm >= GUESTTOOLBOX_STRM_TERM_CNT)
1033	{
1034	m_offBuf = m_cbUsed;
1035	vrc = VINF_EOF;
1036	}
1037	}
1038
1039	LogFlowThisFunc(("cbLeft=%zu, offBuffer=%zu / cbUsed=%zu, cBlocks=%zu, cTerm=%zu -> current block has %RU64 pairs (complete = %RTbool), rc=%Rrc\n",
1040	cbLeftParsed, m_offBuf, m_cbUsed, m_cBlocks, cTerm, streamBlock.GetCount(), streamBlock.IsComplete(), vrc));
1041
1042	return vrc;
1043	}
1044	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
1045
1046	GuestBase::GuestBase(void)
1047	: mConsole(NULL)
1048	, mNextContextID(RTRandU32() % VBOX_GUESTCTRL_MAX_CONTEXTS)
1049	{
1050	}
1051
1052	GuestBase::~GuestBase(void)
1053	{
1054	}
1055
1056	/**
1057	* Separate initialization function for the base class.
1058	*
1059	* @returns VBox status code.
1060	*/
1061	int GuestBase::baseInit(void)
1062	{
1063	int const vrc = RTCritSectInit(&mWaitEventCritSect);
1064	LogFlowFuncLeaveRC(vrc);
1065	return vrc;
1066	}
1067
1068	/**
1069	* Separate uninitialization function for the base class.
1070	*/
1071	void GuestBase::baseUninit(void)
1072	{
1073	LogFlowThisFuncEnter();
1074
1075	/* Make sure to cancel any outstanding wait events. */
1076	int vrc2 = cancelWaitEvents();
1077	AssertRC(vrc2);
1078
1079	vrc2 = RTCritSectDelete(&mWaitEventCritSect);
1080	AssertRC(vrc2);
1081
1082	LogFlowFuncLeaveRC(vrc2);
1083	/* No return value. */
1084	}
1085
1086	/**
1087	* Cancels all outstanding wait events.
1088	*
1089	* @returns VBox status code.
1090	*/
1091	int GuestBase::cancelWaitEvents(void)
1092	{
1093	LogFlowThisFuncEnter();
1094
1095	int vrc = RTCritSectEnter(&mWaitEventCritSect);
1096	if (RT_SUCCESS(vrc))
1097	{
1098	GuestEventGroup::iterator itEventGroups = mWaitEventGroups.begin();
1099	while (itEventGroups != mWaitEventGroups.end())
1100	{
1101	GuestWaitEvents::iterator itEvents = itEventGroups->second.begin();
1102	while (itEvents != itEventGroups->second.end())
1103	{
1104	GuestWaitEvent *pEvent = itEvents->second;
1105	AssertPtr(pEvent);
1106
1107	/*
1108	* Just cancel the event, but don't remove it from the
1109	* wait events map. Don't delete it though, this (hopefully)
1110	* is done by the caller using unregisterWaitEvent().
1111	*/
1112	int vrc2 = pEvent->Cancel();
1113	AssertRC(vrc2);
1114
1115	++itEvents;
1116	}
1117
1118	++itEventGroups;
1119	}
1120
1121	int vrc2 = RTCritSectLeave(&mWaitEventCritSect);
1122	if (RT_SUCCESS(vrc))
1123	vrc = vrc2;
1124	}
1125
1126	LogFlowFuncLeaveRC(vrc);
1127	return vrc;
1128	}
1129
1130	/**
1131	* Handles generic messages not bound to a specific object type.
1132	*
1133	* @return VBox status code. VERR_NOT_FOUND if no handler has been found or VERR_NOT_SUPPORTED
1134	* if this class does not support the specified callback.
1135	* @param pCtxCb Host callback context.
1136	* @param pSvcCb Service callback data.
1137	*/
1138	int GuestBase::dispatchGeneric(PVBOXGUESTCTRLHOSTCBCTX pCtxCb, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb)
1139	{
1140	LogFlowFunc(("pCtxCb=%p, pSvcCb=%p\n", pCtxCb, pSvcCb));
1141
1142	AssertPtrReturn(pCtxCb, VERR_INVALID_POINTER);
1143	AssertPtrReturn(pSvcCb, VERR_INVALID_POINTER);
1144
1145	int vrc;
1146
1147	try
1148	{
1149	Log2Func(("uFunc=%RU32, cParms=%RU32\n", pCtxCb->uMessage, pSvcCb->mParms));
1150
1151	switch (pCtxCb->uMessage)
1152	{
1153	case GUEST_MSG_PROGRESS_UPDATE:
1154	vrc = VINF_SUCCESS;
1155	break;
1156
1157	case GUEST_MSG_REPLY:
1158	{
1159	if (pSvcCb->mParms >= 4)
1160	{
1161	int idx = 1; /* Current parameter index. */
1162	CALLBACKDATA_MSG_REPLY dataCb;
1163	/* pSvcCb->mpaParms[0] always contains the context ID. */
1164	vrc = HGCMSvcGetU32(&pSvcCb->mpaParms[idx++], &dataCb.uType);
1165	AssertRCReturn(vrc, vrc);
1166	vrc = HGCMSvcGetU32(&pSvcCb->mpaParms[idx++], &dataCb.rc);
1167	AssertRCReturn(vrc, vrc);
1168	vrc = HGCMSvcGetPv(&pSvcCb->mpaParms[idx++], &dataCb.pvPayload, &dataCb.cbPayload);
1169	AssertRCReturn(vrc, vrc);
1170
1171	try
1172	{
1173	GuestWaitEventPayload evPayload(dataCb.uType, dataCb.pvPayload, dataCb.cbPayload);
1174	vrc = signalWaitEventInternal(pCtxCb, dataCb.rc, &evPayload);
1175	}
1176	catch (int vrcEx) /* Thrown by GuestWaitEventPayload constructor. */
1177	{
1178	vrc = vrcEx;
1179	}
1180	}
1181	else
1182	vrc = VERR_INVALID_PARAMETER;
1183	break;
1184	}
1185
1186	default:
1187	vrc = VERR_NOT_SUPPORTED;
1188	break;
1189	}
1190	}
1191	catch (std::bad_alloc &)
1192	{
1193	vrc = VERR_NO_MEMORY;
1194	}
1195	catch (int vrcCatch)
1196	{
1197	vrc = vrcCatch;
1198	}
1199
1200	LogFlowFuncLeaveRC(vrc);
1201	return vrc;
1202	}
1203
1204	/**
1205	* Generates a context ID (CID) by incrementing the object's count.
1206	* A CID consists of a session ID, an object ID and a count.
1207	*
1208	* Note: This function does not guarantee that the returned CID is unique;
1209	* the caller has to take care of that and eventually retry.
1210	*
1211	* @returns VBox status code.
1212	* @param uSessionID Session ID to use for CID generation.
1213	* @param uObjectID Object ID to use for CID generation.
1214	* @param puContextID Where to store the generated CID on success.
1215	*/
1216	int GuestBase::generateContextID(uint32_t uSessionID, uint32_t uObjectID, uint32_t *puContextID)
1217	{
1218	AssertPtrReturn(puContextID, VERR_INVALID_POINTER);
1219
1220	if ( uSessionID >= VBOX_GUESTCTRL_MAX_SESSIONS
1221	\|\| uObjectID >= VBOX_GUESTCTRL_MAX_OBJECTS)
1222	return VERR_INVALID_PARAMETER;
1223
1224	uint32_t uCount = ASMAtomicIncU32(&mNextContextID);
1225	uCount %= VBOX_GUESTCTRL_MAX_CONTEXTS;
1226
1227	uint32_t uNewContextID = VBOX_GUESTCTRL_CONTEXTID_MAKE(uSessionID, uObjectID, uCount);
1228
1229	*puContextID = uNewContextID;
1230
1231	#if 0
1232	LogFlowThisFunc(("mNextContextID=%RU32, uSessionID=%RU32, uObjectID=%RU32, uCount=%RU32, uNewContextID=%RU32\n",
1233	mNextContextID, uSessionID, uObjectID, uCount, uNewContextID));
1234	#endif
1235	return VINF_SUCCESS;
1236	}
1237
1238	/**
1239	* Registers (creates) a new wait event based on a given session and object ID.
1240	*
1241	* From those IDs an unique context ID (CID) will be built, which only can be
1242	* around once at a time.
1243	*
1244	* @returns VBox status code.
1245	* @retval VERR_GSTCTL_MAX_CID_COUNT_REACHED if unable to generate a free context ID (CID, the count part (bits 15:0)).
1246	* @param uSessionID Session ID to register wait event for.
1247	* @param uObjectID Object ID to register wait event for.
1248	* @param ppEvent Pointer to registered (created) wait event on success.
1249	* Must be destroyed with unregisterWaitEvent().
1250	*/
1251	int GuestBase::registerWaitEvent(uint32_t uSessionID, uint32_t uObjectID, GuestWaitEvent **ppEvent)
1252	{
1253	GuestEventTypes eventTypesEmpty;
1254	return registerWaitEventEx(uSessionID, uObjectID, eventTypesEmpty, ppEvent);
1255	}
1256
1257	/**
1258	* Creates and registers a new wait event object that waits on a set of events
1259	* related to a given object within the session.
1260	*
1261	* From the session ID and object ID a one-time unique context ID (CID) is built
1262	* for this wait object. Normally the CID is then passed to the guest along
1263	* with a request, and the guest passed the CID back with the reply. The
1264	* handler for the reply then emits a signal on the event type associated with
1265	* the reply, which includes signalling the object returned by this method and
1266	* the waking up the thread waiting on it.
1267	*
1268	* @returns VBox status code.
1269	* @retval VERR_GSTCTL_MAX_CID_COUNT_REACHED if unable to generate a free context ID (CID, the count part (bits 15:0)).
1270	* @param uSessionID Session ID to register wait event for.
1271	* @param uObjectID Object ID to register wait event for.
1272	* @param lstEvents List of events to register the wait event for.
1273	* @param ppEvent Pointer to registered (created) wait event on success.
1274	* Must be destroyed with unregisterWaitEvent().
1275	*/
1276	int GuestBase::registerWaitEventEx(uint32_t uSessionID, uint32_t uObjectID, const GuestEventTypes &lstEvents,
1277	GuestWaitEvent **ppEvent)
1278	{
1279	AssertPtrReturn(ppEvent, VERR_INVALID_POINTER);
1280
1281	uint32_t idContext;
1282	int vrc = generateContextID(uSessionID, uObjectID, &idContext);
1283	AssertRCReturn(vrc, vrc);
1284
1285	GuestWaitEvent *pEvent = new GuestWaitEvent();
1286	AssertPtrReturn(pEvent, VERR_NO_MEMORY);
1287
1288	vrc = pEvent->Init(idContext, lstEvents);
1289	AssertRCReturn(vrc, vrc);
1290
1291	LogFlowThisFunc(("New event=%p, CID=%RU32\n", pEvent, idContext));
1292
1293	vrc = RTCritSectEnter(&mWaitEventCritSect);
1294	if (RT_SUCCESS(vrc))
1295	{
1296	/*
1297	* Check that we don't have any context ID collisions (should be very unlikely).
1298	*
1299	* The ASSUMPTION here is that mWaitEvents has all the same events as
1300	* mWaitEventGroups, so it suffices to check one of the two.
1301	*/
1302	if (mWaitEvents.find(idContext) != mWaitEvents.end())
1303	{
1304	uint32_t cTries = 0;
1305	do
1306	{
1307	vrc = generateContextID(uSessionID, uObjectID, &idContext);
1308	AssertRCBreak(vrc);
1309	LogFunc(("Found context ID duplicate; trying a different context ID: %#x\n", idContext));
1310	if (mWaitEvents.find(idContext) != mWaitEvents.end())
1311	vrc = VERR_GSTCTL_MAX_CID_COUNT_REACHED;
1312	} while (RT_FAILURE_NP(vrc) && cTries++ < 10);
1313	}
1314	if (RT_SUCCESS(vrc))
1315	{
1316	/*
1317	* Insert event into matching event group. This is for faster per-group lookup of all events later.
1318	*/
1319	uint32_t cInserts = 0;
1320	for (GuestEventTypes::const_iterator ItType = lstEvents.begin(); ItType != lstEvents.end(); ++ItType)
1321	{
1322	GuestWaitEvents &eventGroup = mWaitEventGroups[*ItType];
1323	if (eventGroup.find(idContext) == eventGroup.end())
1324	{
1325	try
1326	{
1327	eventGroup.insert(std::pair<uint32_t, GuestWaitEvent *>(idContext, pEvent));
1328	cInserts++;
1329	}
1330	catch (std::bad_alloc &)
1331	{
1332	while (ItType != lstEvents.begin())
1333	{
1334	--ItType;
1335	mWaitEventGroups[*ItType].erase(idContext);
1336	}
1337	vrc = VERR_NO_MEMORY;
1338	break;
1339	}
1340	}
1341	else
1342	Assert(cInserts > 0); /* else: lstEvents has duplicate entries. */
1343	}
1344	if (RT_SUCCESS(vrc))
1345	{
1346	Assert(cInserts > 0 \|\| lstEvents.size() == 0);
1347	RT_NOREF(cInserts);
1348
1349	/*
1350	* Register event in the regular event list.
1351	*/
1352	try
1353	{
1354	mWaitEvents[idContext] = pEvent;
1355	}
1356	catch (std::bad_alloc &)
1357	{
1358	for (GuestEventTypes::const_iterator ItType = lstEvents.begin(); ItType != lstEvents.end(); ++ItType)
1359	mWaitEventGroups[*ItType].erase(idContext);
1360	vrc = VERR_NO_MEMORY;
1361	}
1362	}
1363	}
1364
1365	RTCritSectLeave(&mWaitEventCritSect);
1366	}
1367	if (RT_SUCCESS(vrc))
1368	{
1369	*ppEvent = pEvent;
1370	return vrc;
1371	}
1372
1373	if (pEvent)
1374	delete pEvent;
1375
1376	return vrc;
1377	}
1378
1379	/**
1380	* Signals all wait events of a specific type (if found)
1381	* and notifies external events accordingly.
1382	*
1383	* @returns VBox status code.
1384	* @param aType Event type to signal.
1385	* @param aEvent Which external event to notify.
1386	*/
1387	int GuestBase::signalWaitEvent(VBoxEventType_T aType, IEvent *aEvent)
1388	{
1389	int vrc = RTCritSectEnter(&mWaitEventCritSect);
1390	#ifdef DEBUG
1391	uint32_t cEvents = 0;
1392	#endif
1393	if (RT_SUCCESS(vrc))
1394	{
1395	GuestEventGroup::iterator itGroup = mWaitEventGroups.find(aType);
1396	if (itGroup != mWaitEventGroups.end())
1397	{
1398	/* Signal all events in the group, leaving the group empty afterwards. */
1399	GuestWaitEvents::iterator ItWaitEvt;
1400	while ((ItWaitEvt = itGroup->second.begin()) != itGroup->second.end())
1401	{
1402	LogFlowThisFunc(("Signalling event=%p, type=%ld (CID %#x: Session=%RU32, Object=%RU32, Count=%RU32) ...\n",
1403	ItWaitEvt->second, aType, ItWaitEvt->first, VBOX_GUESTCTRL_CONTEXTID_GET_SESSION(ItWaitEvt->first),
1404	VBOX_GUESTCTRL_CONTEXTID_GET_OBJECT(ItWaitEvt->first), VBOX_GUESTCTRL_CONTEXTID_GET_COUNT(ItWaitEvt->first)));
1405
1406	int vrc2 = ItWaitEvt->second->SignalExternal(aEvent);
1407	AssertRC(vrc2);
1408
1409	/* Take down the wait event object details before we erase it from this list and invalid ItGrpEvt. */
1410	const GuestEventTypes &EvtTypes = ItWaitEvt->second->Types();
1411	uint32_t idContext = ItWaitEvt->first;
1412	itGroup->second.erase(ItWaitEvt);
1413
1414	for (GuestEventTypes::const_iterator ItType = EvtTypes.begin(); ItType != EvtTypes.end(); ++ItType)
1415	{
1416	GuestEventGroup::iterator EvtTypeGrp = mWaitEventGroups.find(*ItType);
1417	if (EvtTypeGrp != mWaitEventGroups.end())
1418	{
1419	ItWaitEvt = EvtTypeGrp->second.find(idContext);
1420	if (ItWaitEvt != EvtTypeGrp->second.end())
1421	{
1422	LogFlowThisFunc(("Removing event %p (CID %#x) from type %d group\n", ItWaitEvt->second, idContext, *ItType));
1423	EvtTypeGrp->second.erase(ItWaitEvt);
1424	LogFlowThisFunc(("%zu events left for type %d\n", EvtTypeGrp->second.size(), *ItType));
1425	Assert(EvtTypeGrp->second.find(idContext) == EvtTypeGrp->second.end()); /* no duplicates */
1426	}
1427	}
1428	}
1429	}
1430	}
1431
1432	int vrc2 = RTCritSectLeave(&mWaitEventCritSect);
1433	if (RT_SUCCESS(vrc))
1434	vrc = vrc2;
1435	}
1436
1437	#ifdef DEBUG
1438	LogFlowThisFunc(("Signalled %RU32 events, vrc=%Rrc\n", cEvents, vrc));
1439	#endif
1440	return vrc;
1441	}
1442
1443	/**
1444	* Signals a wait event which is registered to a specific callback (bound to a context ID (CID)).
1445	*
1446	* @returns VBox status code.
1447	* @param pCbCtx Pointer to host service callback context.
1448	* @param vrcGuest Guest return VBox status code to set.
1449	* @param pPayload Additional wait event payload data set set on return. Optional.
1450	*/
1451	int GuestBase::signalWaitEventInternal(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, int vrcGuest, const GuestWaitEventPayload *pPayload)
1452	{
1453	if (RT_SUCCESS(vrcGuest))
1454	return signalWaitEventInternalEx(pCbCtx, VINF_SUCCESS, VINF_SUCCESS /* vrcGuest */, pPayload);
1455
1456	return signalWaitEventInternalEx(pCbCtx, VERR_GSTCTL_GUEST_ERROR, vrcGuest, pPayload);
1457	}
1458
1459	/**
1460	* Signals a wait event which is registered to a specific callback (bound to a context ID (CID)).
1461	* Extended version.
1462	*
1463	* @returns VBox status code.
1464	* @param pCbCtx Pointer to host service callback context.
1465	* @param vrc Return VBox status code to set as wait result.
1466	* @param vrcGuest Guest return VBox status code to set additionally, if
1467	* vrc is set to VERR_GSTCTL_GUEST_ERROR.
1468	* @param pPayload Additional wait event payload data set set on return. Optional.
1469	*/
1470	int GuestBase::signalWaitEventInternalEx(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, int vrc, int vrcGuest,
1471	const GuestWaitEventPayload *pPayload)
1472	{
1473	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
1474	/* pPayload is optional. */
1475
1476	int vrc2 = RTCritSectEnter(&mWaitEventCritSect);
1477	if (RT_SUCCESS(vrc2))
1478	{
1479	GuestWaitEvents::iterator itEvent = mWaitEvents.find(pCbCtx->uContextID);
1480	if (itEvent != mWaitEvents.end())
1481	{
1482	LogFlowThisFunc(("Signalling event=%p (CID %RU32, vrc=%Rrc, vrcGuest=%Rrc, pPayload=%p) ...\n",
1483	itEvent->second, itEvent->first, vrc, vrcGuest, pPayload));
1484	GuestWaitEvent *pEvent = itEvent->second;
1485	AssertPtr(pEvent);
1486	vrc2 = pEvent->SignalInternal(vrc, vrcGuest, pPayload);
1487	}
1488	else
1489	vrc2 = VERR_NOT_FOUND;
1490
1491	int vrc3 = RTCritSectLeave(&mWaitEventCritSect);
1492	if (RT_SUCCESS(vrc2))
1493	vrc2 = vrc3;
1494	}
1495
1496	return vrc2;
1497	}
1498
1499	/**
1500	* Unregisters (deletes) a wait event.
1501	*
1502	* After successful unregistration the event will not be valid anymore.
1503	*
1504	* @returns VBox status code.
1505	* @param pWaitEvt Wait event to unregister (delete).
1506	*/
1507	int GuestBase::unregisterWaitEvent(GuestWaitEvent *pWaitEvt)
1508	{
1509	if (!pWaitEvt) /* Nothing to unregister. */
1510	return VINF_SUCCESS;
1511
1512	int vrc = RTCritSectEnter(&mWaitEventCritSect);
1513	if (RT_SUCCESS(vrc))
1514	{
1515	LogFlowThisFunc(("pWaitEvt=%p\n", pWaitEvt));
1516
1517	/** @todo r=bird: One way of optimizing this would be to use the pointer
1518	* instead of the context ID as index into the groups, i.e. revert the value
1519	* pair for the GuestWaitEvents type.
1520	*
1521	* An even more efficent way, would be to not use sexy std::xxx containers for
1522	* the types, but iprt/list.h, as that would just be a RTListNodeRemove call for
1523	* each type w/o needing to iterate much at all. I.e. add a struct {
1524	* RTLISTNODE, GuestWaitEvent *pSelf} array to GuestWaitEvent, and change
1525	* GuestEventGroup to std::map<VBoxEventType_T, RTListAnchorClass>
1526	* (RTListAnchorClass == RTLISTANCHOR wrapper with a constructor)).
1527	*
1528	* P.S. the try/catch is now longer needed after I changed pWaitEvt->Types() to
1529	* return a const reference rather than a copy of the type list (and it think it
1530	* is safe to assume iterators are not hitting the heap). Copy vs reference is
1531	* an easy mistake to make in C++.
1532	*
1533	* P.P.S. The mWaitEventGroups optimization is probably just a lot of extra work
1534	* with little payoff.
1535	*/
1536	try
1537	{
1538	/* Remove the event from all event type groups. */
1539	const GuestEventTypes &lstTypes = pWaitEvt->Types();
1540	for (GuestEventTypes::const_iterator itType = lstTypes.begin();
1541	itType != lstTypes.end(); ++itType)
1542	{
1543	/** @todo Slow O(n) lookup. Optimize this. */
1544	GuestWaitEvents::iterator itCurEvent = mWaitEventGroups[(*itType)].begin();
1545	while (itCurEvent != mWaitEventGroups[(*itType)].end())
1546	{
1547	if (itCurEvent->second == pWaitEvt)
1548	{
1549	mWaitEventGroups[(*itType)].erase(itCurEvent);
1550	break;
1551	}
1552	++itCurEvent;
1553	}
1554	}
1555
1556	/* Remove the event from the general event list as well. */
1557	GuestWaitEvents::iterator itEvent = mWaitEvents.find(pWaitEvt->ContextID());
1558
1559	Assert(itEvent != mWaitEvents.end());
1560	Assert(itEvent->second == pWaitEvt);
1561
1562	mWaitEvents.erase(itEvent);
1563
1564	delete pWaitEvt;
1565	pWaitEvt = NULL;
1566	}
1567	catch (const std::exception &ex)
1568	{
1569	RT_NOREF(ex);
1570	AssertFailedStmt(vrc = VERR_NOT_FOUND);
1571	}
1572
1573	int vrc2 = RTCritSectLeave(&mWaitEventCritSect);
1574	if (RT_SUCCESS(vrc))
1575	vrc = vrc2;
1576	}
1577
1578	return vrc;
1579	}
1580
1581	/**
1582	* Waits for an already registered guest wait event.
1583	*
1584	* @return VBox status code.
1585	* @retval VERR_GSTCTL_GUEST_ERROR may be returned, call GuestResult() to get
1586	* the actual result.
1587	*
1588	* @param pWaitEvt Pointer to event to wait for.
1589	* @param msTimeout Timeout (in ms) for waiting.
1590	* @param pType Event type of following IEvent. Optional.
1591	* @param ppEvent Pointer to IEvent which got triggered for this event. Optional.
1592	*/
1593	int GuestBase::waitForEvent(GuestWaitEvent pWaitEvt, uint32_t msTimeout, VBoxEventType_T pType, IEvent **ppEvent)
1594	{
1595	AssertPtrReturn(pWaitEvt, VERR_INVALID_POINTER);
1596	/* pType is optional. */
1597	/* ppEvent is optional. */
1598
1599	int vrc = pWaitEvt->Wait(msTimeout);
1600	if (RT_SUCCESS(vrc))
1601	{
1602	const ComPtr<IEvent> pThisEvent = pWaitEvt->Event();
1603	if (pThisEvent.isNotNull()) /* Make sure that we actually have an event associated. */
1604	{
1605	if (pType)
1606	{
1607	HRESULT hrc = pThisEvent->COMGETTER(Type)(pType);
1608	if (FAILED(hrc))
1609	vrc = VERR_COM_UNEXPECTED;
1610	}
1611	if ( RT_SUCCESS(vrc)
1612	&& ppEvent)
1613	pThisEvent.queryInterfaceTo(ppEvent);
1614
1615	unconst(pThisEvent).setNull();
1616	}
1617	}
1618
1619	return vrc;
1620	}
1621
1622	#ifndef VBOX_GUESTCTRL_TEST_CASE
1623	/**
1624	* Convenience function to return a pre-formatted string using an action description and a guest error information.
1625	*
1626	* @returns Pre-formatted string with a user-friendly error string.
1627	* @param strAction Action of when the error occurred.
1628	* @param guestErrorInfo Related guest error information to use.
1629	*/
1630	/* static */ Utf8Str GuestBase::getErrorAsString(const Utf8Str& strAction, const GuestErrorInfo& guestErrorInfo)
1631	{
1632	Assert(strAction.isNotEmpty());
1633	return Utf8StrFmt("%s: %s", strAction.c_str(), getErrorAsString(guestErrorInfo).c_str());
1634	}
1635
1636	/**
1637	* Returns a user-friendly error message from a given GuestErrorInfo object.
1638	*
1639	* @returns Error message string.
1640	* @param guestErrorInfo Guest error info to return error message for.
1641	*/
1642	/* static */ Utf8Str GuestBase::getErrorAsString(const GuestErrorInfo& guestErrorInfo)
1643	{
1644	AssertMsg(RT_FAILURE(guestErrorInfo.getVrc()), ("Guest vrc does not indicate a failure\n"));
1645
1646	Utf8Str strErr;
1647
1648	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
1649	# define CASE_TOOL_ERROR(a_eType, a_strTool) \
1650	case a_eType: \
1651	{ \
1652	strErr = GuestProcessToolbox::guestErrorToString(a_strTool, guestErrorInfo); \
1653	break; \
1654	}
1655	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
1656
1657	switch (guestErrorInfo.getType())
1658	{
1659	case GuestErrorInfo::Type_Session:
1660	strErr = GuestSession::i_guestErrorToString(guestErrorInfo.getVrc());
1661	break;
1662
1663	case GuestErrorInfo::Type_Process:
1664	strErr = GuestProcess::i_guestErrorToString(guestErrorInfo.getVrc(), guestErrorInfo.getWhat().c_str());
1665	break;
1666
1667	case GuestErrorInfo::Type_File:
1668	strErr = GuestFile::i_guestErrorToString(guestErrorInfo.getVrc(), guestErrorInfo.getWhat().c_str());
1669	break;
1670
1671	case GuestErrorInfo::Type_Directory:
1672	strErr = GuestDirectory::i_guestErrorToString(guestErrorInfo.getVrc(), guestErrorInfo.getWhat().c_str());
1673	break;
1674
1675	case GuestErrorInfo::Type_Fs:
1676	strErr = GuestFs::guestErrorToString(guestErrorInfo);
1677	break;
1678
1679	#ifdef VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT
1680	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolLs, VBOXSERVICE_TOOL_LS);
1681	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolMkDir, VBOXSERVICE_TOOL_MKDIR);
1682	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolMkTemp, VBOXSERVICE_TOOL_MKTEMP);
1683	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolRm, VBOXSERVICE_TOOL_RM);
1684	CASE_TOOL_ERROR(GuestErrorInfo::Type_ToolStat, VBOXSERVICE_TOOL_STAT);
1685	#endif /* VBOX_WITH_GSTCTL_TOOLBOX_SUPPORT */
1686	default:
1687	AssertMsgFailed(("Type not implemented (type=%RU32, vrc=%Rrc)\n", guestErrorInfo.getType(), guestErrorInfo.getVrc()));
1688	strErr = Utf8StrFmt("Unknown / Not implemented -- Please file a bug report (type=%RU32, vrc=%Rrc)\n",
1689	guestErrorInfo.getType(), guestErrorInfo.getVrc());
1690	break;
1691	}
1692
1693	return strErr;
1694	}
1695
1696	#endif /* VBOX_GUESTCTRL_TEST_CASE */
1697
1698	/**
1699	* Converts RTFMODE to FsObjType_T.
1700	*
1701	* @return Converted FsObjType_T type.
1702	* @param fMode RTFMODE to convert.
1703	*/
1704	/* static */
1705	FsObjType_T GuestBase::fileModeToFsObjType(RTFMODE fMode)
1706	{
1707	if (RTFS_IS_FIFO(fMode)) return FsObjType_Fifo;
1708	else if (RTFS_IS_DEV_CHAR(fMode)) return FsObjType_DevChar;
1709	else if (RTFS_IS_DIRECTORY(fMode)) return FsObjType_Directory;
1710	else if (RTFS_IS_DEV_BLOCK(fMode)) return FsObjType_DevBlock;
1711	else if (RTFS_IS_FILE(fMode)) return FsObjType_File;
1712	else if (RTFS_IS_SYMLINK(fMode)) return FsObjType_Symlink;
1713	else if (RTFS_IS_SOCKET(fMode)) return FsObjType_Socket;
1714	else if (RTFS_IS_WHITEOUT(fMode)) return FsObjType_WhiteOut;
1715
1716	return FsObjType_Unknown;
1717	}
1718
1719	/**
1720	* Converts a FsObjType_T to a human-readable string.
1721	*
1722	* @returns Human-readable string of FsObjType_T.
1723	* @param enmType FsObjType_T to convert.
1724	*/
1725	/* static */
1726	const char *GuestBase::fsObjTypeToStr(FsObjType_T enmType)
1727	{
1728	switch (enmType)
1729	{
1730	case FsObjType_Directory: return "directory";
1731	case FsObjType_Symlink: return "symbolic link";
1732	case FsObjType_File: return "file";
1733	default: break;
1734	}
1735
1736	return "unknown";
1737	}
1738
1739	/**
1740	* Converts a PathStyle_T to a human-readable string.
1741	*
1742	* @returns Human-readable string of PathStyle_T.
1743	* @param enmPathStyle PathStyle_T to convert.
1744	*/
1745	/* static */
1746	const char *GuestBase::pathStyleToStr(PathStyle_T enmPathStyle)
1747	{
1748	switch (enmPathStyle)
1749	{
1750	case PathStyle_DOS: return "DOS";
1751	case PathStyle_UNIX: return "UNIX";
1752	case PathStyle_Unknown: return "Unknown";
1753	default: break;
1754	}
1755
1756	return "<invalid>";
1757	}
1758
1759	GuestObject::GuestObject(void)
1760	: mSession(NULL),
1761	mObjectID(0)
1762	{
1763	}
1764
1765	GuestObject::~GuestObject(void)
1766	{
1767	}
1768
1769	/**
1770	* Binds this guest (control) object to a specific guest (control) session.
1771	*
1772	* @returns VBox status code.
1773	* @param pConsole Pointer to console object to use.
1774	* @param pSession Pointer to session to bind this object to.
1775	* @param uObjectID Object ID for this object to use within that specific session.
1776	* Each object ID must be unique per session.
1777	*/
1778	int GuestObject::bindToSession(Console pConsole, GuestSession pSession, uint32_t uObjectID)
1779	{
1780	AssertPtrReturn(pConsole, VERR_INVALID_POINTER);
1781	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
1782
1783	mConsole = pConsole;
1784	mSession = pSession;
1785	mObjectID = uObjectID;
1786
1787	return VINF_SUCCESS;
1788	}
1789
1790	/**
1791	* Registers (creates) a new wait event.
1792	*
1793	* @returns VBox status code.
1794	* @param lstEvents List of events which the new wait event gets triggered at.
1795	* @param ppEvent Returns the new wait event on success.
1796	*/
1797	int GuestObject::registerWaitEvent(const GuestEventTypes &lstEvents,
1798	GuestWaitEvent **ppEvent)
1799	{
1800	AssertPtr(mSession);
1801	return GuestBase::registerWaitEventEx(mSession->i_getId(), mObjectID, lstEvents, ppEvent);
1802	}
1803
1804	/**
1805	* Sends a HGCM message to the guest (via the guest control host service).
1806	*
1807	* @returns VBox status code.
1808	* @param uMessage Message ID of message to send.
1809	* @param cParms Number of HGCM message parameters to send.
1810	* @param paParms Array of HGCM message parameters to send.
1811	*/
1812	int GuestObject::sendMessage(uint32_t uMessage, uint32_t cParms, PVBOXHGCMSVCPARM paParms)
1813	{
1814	#ifndef VBOX_GUESTCTRL_TEST_CASE
1815	ComObjPtr<Console> pConsole = mConsole;
1816	Assert(!pConsole.isNull());
1817
1818	int vrc = VERR_HGCM_SERVICE_NOT_FOUND;
1819
1820	/* Forward the information to the VMM device. */
1821	VMMDev *pVMMDev = pConsole->i_getVMMDev();
1822	if (pVMMDev)
1823	{
1824	/* HACK ALERT! We extend the first parameter to 64-bit and use the
1825	two topmost bits for call destination information. */
1826	Assert(paParms[0].type == VBOX_HGCM_SVC_PARM_32BIT);
1827	paParms[0].type = VBOX_HGCM_SVC_PARM_64BIT;
1828	paParms[0].u.uint64 = (uint64_t)paParms[0].u.uint32 \| VBOX_GUESTCTRL_DST_SESSION;
1829
1830	/* Make the call. */
1831	LogFlowThisFunc(("uMessage=%RU32, cParms=%RU32\n", uMessage, cParms));
1832	vrc = pVMMDev->hgcmHostCall(HGCMSERVICE_NAME, uMessage, cParms, paParms);
1833	if (RT_FAILURE(vrc))
1834	{
1835	/** @todo What to do here? */
1836	}
1837	}
1838	#else
1839	LogFlowThisFuncEnter();
1840
1841	/* Not needed within testcases. */
1842	RT_NOREF(uMessage, cParms, paParms);
1843	int vrc = VINF_SUCCESS;
1844	#endif
1845	return vrc;
1846	}
1847
1848	GuestWaitEventBase::GuestWaitEventBase(void)
1849	: mfAborted(false),
1850	mCID(0),
1851	mEventSem(NIL_RTSEMEVENT),
1852	mVrc(VINF_SUCCESS),
1853	mGuestRc(VINF_SUCCESS)
1854	{
1855	}
1856
1857	GuestWaitEventBase::~GuestWaitEventBase(void)
1858	{
1859	if (mEventSem != NIL_RTSEMEVENT)
1860	{
1861	RTSemEventDestroy(mEventSem);
1862	mEventSem = NIL_RTSEMEVENT;
1863	}
1864	}
1865
1866	/**
1867	* Initializes a wait event with a specific context ID (CID).
1868	*
1869	* @returns VBox status code.
1870	* @param uCID Context ID (CID) to initialize wait event with.
1871	*/
1872	int GuestWaitEventBase::Init(uint32_t uCID)
1873	{
1874	mCID = uCID;
1875
1876	return RTSemEventCreate(&mEventSem);
1877	}
1878
1879	/**
1880	* Signals a wait event.
1881	*
1882	* @returns VBox status code.
1883	* @param vrc Return VBox status code to set as wait result.
1884	* @param vrcGuest Guest return VBox status code to set additionally, if
1885	* @a vrc is set to VERR_GSTCTL_GUEST_ERROR.
1886	* @param pPayload Additional wait event payload data set set on return. Optional.
1887	*/
1888	int GuestWaitEventBase::SignalInternal(int vrc, int vrcGuest, const GuestWaitEventPayload *pPayload)
1889	{
1890	if (mfAborted)
1891	return VERR_CANCELLED;
1892
1893	#ifdef VBOX_STRICT
1894	if (vrc == VERR_GSTCTL_GUEST_ERROR)
1895	AssertMsg(RT_FAILURE(vrcGuest), ("Guest error indicated but no actual guest error set (%Rrc)\n", vrcGuest));
1896	else
1897	AssertMsg(RT_SUCCESS(vrcGuest), ("No guest error indicated but actual guest error set (%Rrc)\n", vrcGuest));
1898	#endif
1899
1900	int vrc2;
1901	if (pPayload)
1902	vrc2 = mPayload.CopyFromDeep(*pPayload);
1903	else
1904	vrc2 = VINF_SUCCESS;
1905	if (RT_SUCCESS(vrc2))
1906	{
1907	mVrc = vrc;
1908	mGuestRc = vrcGuest;
1909
1910	vrc2 = RTSemEventSignal(mEventSem);
1911	}
1912
1913	return vrc2;
1914	}
1915
1916	/**
1917	* Waits for the event to get triggered. Will return success if the
1918	* wait was successufl (e.g. was being triggered), otherwise an error will be returned.
1919	*
1920	* @returns VBox status code.
1921	* @retval VERR_GSTCTL_GUEST_ERROR may be returned, call GuestResult() to get
1922	* the actual result from the guest side.
1923	*
1924	* @param msTimeout Timeout (in ms) to wait.
1925	* Specifiy 0 to wait indefinitely.
1926	*/
1927	int GuestWaitEventBase::Wait(RTMSINTERVAL msTimeout)
1928	{
1929	int vrc;
1930	if (!mfAborted)
1931	{
1932	AssertReturn(mEventSem != NIL_RTSEMEVENT, VERR_CANCELLED);
1933
1934	vrc = RTSemEventWait(mEventSem, msTimeout ? msTimeout : RT_INDEFINITE_WAIT);
1935	if ( RT_SUCCESS(vrc)
1936	&& mfAborted)
1937	vrc = VERR_CANCELLED;
1938
1939	if (RT_SUCCESS(vrc))
1940	{
1941	/* If waiting succeeded, return the overall
1942	* result code. */
1943	vrc = mVrc;
1944	}
1945	}
1946	else
1947	vrc = VERR_CANCELLED;
1948	return vrc;
1949	}
1950
1951	GuestWaitEvent::GuestWaitEvent(void)
1952	{
1953	}
1954
1955	GuestWaitEvent::~GuestWaitEvent(void)
1956	{
1957
1958	}
1959
1960	/**
1961	* Cancels the event.
1962	*/
1963	int GuestWaitEvent::Cancel(void)
1964	{
1965	if (mfAborted) /* Already aborted? */
1966	return VINF_SUCCESS;
1967
1968	mfAborted = true;
1969
1970	#ifdef DEBUG_andy
1971	LogFlowThisFunc(("Cancelling %p ...\n"));
1972	#endif
1973	return RTSemEventSignal(mEventSem);
1974	}
1975
1976	/**
1977	* Initializes a wait event with a given context ID (CID).
1978	*
1979	* @returns VBox status code.
1980	* @param uCID Context ID to initialize wait event with.
1981	*/
1982	int GuestWaitEvent::Init(uint32_t uCID)
1983	{
1984	return GuestWaitEventBase::Init(uCID);
1985	}
1986
1987	/**
1988	* Initializes a wait event with a given context ID (CID) and a list of event types to wait for.
1989	*
1990	* @returns VBox status code.
1991	* @param uCID Context ID to initialize wait event with.
1992	* @param lstEvents List of event types to wait for this wait event to get signalled.
1993	*/
1994	int GuestWaitEvent::Init(uint32_t uCID, const GuestEventTypes &lstEvents)
1995	{
1996	int vrc = GuestWaitEventBase::Init(uCID);
1997	if (RT_SUCCESS(vrc))
1998	mEventTypes = lstEvents;
1999
2000	return vrc;
2001	}
2002
2003	/**
2004	* Signals the event.
2005	*
2006	* @return VBox status code.
2007	* @param pEvent Public IEvent to associate.
2008	* Optional.
2009	*/
2010	int GuestWaitEvent::SignalExternal(IEvent *pEvent)
2011	{
2012	if (pEvent)
2013	mEvent = pEvent;
2014
2015	return RTSemEventSignal(mEventSem);
2016	}
2017
2018
2019	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
2020	// GuestPath
2021	//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
2022
2023	/**
2024	* Builds a (final) destination path from a given source + destination path.
2025	*
2026	* This does not utilize any file system access whatsoever. Used for guest and host paths.
2027	*
2028	* @returns VBox status code.
2029	* @param strSrcPath Source path to build destination path for.
2030	* @param enmSrcPathStyle Path style the source path is in.
2031	* @param strDstPath Destination path to use for building the (final) destination path.
2032	* @param enmDstPathStyle Path style the destination path is in.
2033	*
2034	* @note See rules within the function.
2035	*/
2036	/* static */
2037	int GuestPath::BuildDestinationPath(const Utf8Str &strSrcPath, PathStyle_T enmSrcPathStyle,
2038	Utf8Str &strDstPath, PathStyle_T enmDstPathStyle)
2039	{
2040	/*
2041	* Rules:
2042	*
2043	* # source dest final dest remarks
2044	*
2045	* 1 /src/path1/ /dst/path2/ /dst/path2/<contents of path1> Just copies contents of <contents of path1>, not the path1 itself.
2046	* 2 /src/path1 /dst/path2/ /dst/path2/path1 Copies path1 into path2.
2047	* 3 /src/path1 /dst/path2 /dst/path2 Overwrites stuff from path2 with stuff from path1.
2048	* 4 Dotdot ("..") directories are forbidden for security reasons.
2049	*/
2050	const char *pszSrcName = RTPathFilenameEx(strSrcPath.c_str(),
2051	enmSrcPathStyle == PathStyle_DOS
2052	? RTPATH_STR_F_STYLE_DOS : RTPATH_STR_F_STYLE_UNIX);
2053
2054	const char *pszDstName = RTPathFilenameEx(strDstPath.c_str(),
2055	enmDstPathStyle == PathStyle_DOS
2056	? RTPATH_STR_F_STYLE_DOS : RTPATH_STR_F_STYLE_UNIX);
2057
2058	if ( (!pszSrcName && !pszDstName) /* #1 */
2059	\|\| ( pszSrcName && pszDstName)) /* #3 */
2060	{
2061	/* Note: Must have DirectoryFlag_CopyIntoExisting + FileFlag_NoReplace not set. */
2062	}
2063	else if (pszSrcName && !pszDstName) /* #2 */
2064	{
2065	if (!strDstPath.endsWith(PATH_STYLE_SEP_STR(enmDstPathStyle)))
2066	strDstPath += PATH_STYLE_SEP_STR(enmDstPathStyle);
2067	strDstPath += pszSrcName;
2068	}
2069
2070	/* Translate the built destination path to a path compatible with the destination. */
2071	int vrc = GuestPath::Translate(strDstPath, enmSrcPathStyle, enmDstPathStyle);
2072	if (RT_SUCCESS(vrc))
2073	{
2074	union
2075	{
2076	RTPATHPARSED Parsed;
2077	RTPATHSPLIT Split;
2078	uint8_t ab[4096];
2079	} u;
2080	vrc = RTPathParse(strDstPath.c_str(), &u.Parsed, sizeof(u),
2081	enmDstPathStyle == PathStyle_DOS ? RTPATH_STR_F_STYLE_DOS : RTPATH_STR_F_STYLE_UNIX);
2082	if (RT_SUCCESS(vrc))
2083	{
2084	if (u.Parsed.fProps & RTPATH_PROP_DOTDOT_REFS) /* #4 */
2085	vrc = VERR_INVALID_PARAMETER;
2086	}
2087	}
2088
2089	LogRel2(("Guest Control: Building destination path for '%s' (%s) -> '%s' (%s): %Rrc\n",
2090	strSrcPath.c_str(), GuestBase::pathStyleToStr(enmSrcPathStyle),
2091	strDstPath.c_str(), GuestBase::pathStyleToStr(enmDstPathStyle), vrc));
2092
2093	return vrc;
2094	}
2095
2096	/**
2097	* Translates a path from a specific path style into another.
2098	*
2099	* @returns VBox status code.
2100	* @retval VERR_NOT_SUPPORTED if a conversion is not supported.
2101	* @retval VERR_NOT_IMPLEMENTED if path style conversion is not implemented yet.
2102	* @param strPath Path to translate. Will contain the translated path on success. UTF-8 only.
2103	* @param enmSrcPathStyle Source path style \a strPath is expected in.
2104	* @param enmDstPathStyle Destination path style to convert to.
2105	* @param fForce Whether to force the translation to the destination path style or not.
2106	*
2107	* @note This does NOT remove any trailing slashes and/or perform file system lookups!
2108	*/
2109	/* static */
2110	int GuestPath::Translate(Utf8Str &strPath, PathStyle_T enmSrcPathStyle, PathStyle_T enmDstPathStyle, bool fForce /* = false */)
2111	{
2112	if (strPath.isEmpty())
2113	return VINF_SUCCESS;
2114
2115	AssertReturn(RTStrIsValidEncoding(strPath.c_str()), VERR_INVALID_PARAMETER);
2116
2117	int vrc = VINF_SUCCESS;
2118
2119	Utf8Str strTranslated;
2120
2121	if ( ( enmSrcPathStyle == PathStyle_DOS
2122	&& enmDstPathStyle == PathStyle_UNIX)
2123	\|\| (fForce && enmDstPathStyle == PathStyle_UNIX))
2124	{
2125	strTranslated = strPath;
2126	RTPathChangeToUnixSlashes(strTranslated.mutableRaw(), true /* fForce */);
2127	}
2128	else if ( ( enmSrcPathStyle == PathStyle_UNIX
2129	&& enmDstPathStyle == PathStyle_DOS)
2130	\|\| (fForce && enmDstPathStyle == PathStyle_DOS))
2131
2132	{
2133	strTranslated = strPath;
2134	RTPathChangeToDosSlashes(strTranslated.mutableRaw(), true /* fForce */);
2135	}
2136
2137	if ( strTranslated.isEmpty() /* Not forced. */
2138	&& enmSrcPathStyle == enmDstPathStyle)
2139	{
2140	strTranslated = strPath;
2141	}
2142
2143	if (RT_FAILURE(vrc))
2144	{
2145	LogRel(("Guest Control: Translating path '%s' (%s) -> '%s' (%s) failed, vrc=%Rrc\n",
2146	strPath.c_str(), GuestBase::pathStyleToStr(enmSrcPathStyle),
2147	strTranslated.c_str(), GuestBase::pathStyleToStr(enmDstPathStyle), vrc));
2148	return vrc;
2149	}
2150
2151	/* Cleanup. */
2152	const char *psz = strTranslated.mutableRaw();
2153	size_t const cch = strTranslated.length();
2154	size_t off = 0;
2155	while (off < cch)
2156	{
2157	if (off + 1 > cch)
2158	break;
2159	/* Remove double back slashes (DOS only). */
2160	if ( enmDstPathStyle == PathStyle_DOS
2161	&& psz[off] == '\\'
2162	&& psz[off + 1] == '\\')
2163	{
2164	strTranslated.erase(off + 1, 1);
2165	off++;
2166	}
2167	/* Remove double forward slashes (UNIX only). */
2168	if ( enmDstPathStyle == PathStyle_UNIX
2169	&& psz[off] == '/'
2170	&& psz[off + 1] == '/')
2171	{
2172	strTranslated.erase(off + 1, 1);
2173	off++;
2174	}
2175	off++;
2176	}
2177
2178	/* Note: Do not trim() paths here, as technically it's possible to create paths with trailing spaces. */
2179
2180	strTranslated.jolt();
2181
2182	LogRel2(("Guest Control: Translating '%s' (%s) -> '%s' (%s): %Rrc\n",
2183	strPath.c_str(), GuestBase::pathStyleToStr(enmSrcPathStyle),
2184	strTranslated.c_str(), GuestBase::pathStyleToStr(enmDstPathStyle), vrc));
2185
2186	if (RT_SUCCESS(vrc))
2187	strPath = strTranslated;
2188
2189	return vrc;
2190	}
2191

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source: vbox/trunk/src/VBox/Main/src-client/GuestCtrlPrivate.cpp@ 102654

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